EP2659869B1 - Vorrichtung für die Positionierung eines Einsatzes mit Einzelübertragung mit Querrichtungseinsatz-Positionierungssteuerung - Google Patents

Vorrichtung für die Positionierung eines Einsatzes mit Einzelübertragung mit Querrichtungseinsatz-Positionierungssteuerung Download PDF

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Publication number
EP2659869B1
EP2659869B1 EP13166330.4A EP13166330A EP2659869B1 EP 2659869 B1 EP2659869 B1 EP 2659869B1 EP 13166330 A EP13166330 A EP 13166330A EP 2659869 B1 EP2659869 B1 EP 2659869B1
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EP
European Patent Office
Prior art keywords
puck
web
vacuum
pitch
pucks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13166330.4A
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English (en)
French (fr)
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EP2659869A1 (de
Inventor
John A McCabe
Chris Nelson
Robert E Andrews
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Joa Curt G Inc
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Joa Curt G Inc
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Publication date
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Priority to PL13166330T priority Critical patent/PL2659869T3/pl
Publication of EP2659869A1 publication Critical patent/EP2659869A1/de
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Publication of EP2659869B1 publication Critical patent/EP2659869B1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15764—Transferring, feeding or handling devices; Drives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15772—Control
    • A61F2013/15796—Control of the alignment or position of article or components

Definitions

  • This invention relates to a method and apparatus for receiving and cutting a continuous web, and transferring articles, or inserts, such as absorbent pads cut from the web in the manufacture of disposable absorbent articles such as diapers, incontinence control garments or female sanitary pads as they advance along a production line.
  • a typical article or web to be reoriented by the apparatus of this invention is an absorbent pad.
  • Past devices normally cut a received web to form the pad prior to placement on a transfer mechanism. Cutting the web to form the pad prior to placement on the transfer mechanism requires a separate step between the cutting process and transfer process. Therefore, it is desirable to have an apparatus for receiving a continuous web onto a transfer mechanism prior to cutting the web into discrete pads, cutting a section from the web thereby forming a pad, spinning the pad to a predetermined angle, and transferring the pad for placement on a receiving surface, thereby eliminating the requirement of a separate transfer step between the cutting and transferring step.
  • the web may be provided at one velocity and a pad may be cut from the web at a cut pitch.
  • the cut pitch is likely a different spacing interval than the desired placement pitch on a receiving surface.
  • the pad may be an absorbent insert to be placed on a fluid impervious chassis. Therefore, the web may be cut at a cut pitch, X, and the receiving pitch, or distance between consecutive chasses at the receiving surface may be represented as Y, where Y is comprised of a chassis trailing edge, an interval space, and a subsequent chassis leading edge. Therefore, it is desirable to compensate for the difference between the cut pitch, X, and the receive pitch, Y. Re-pitching is known in the art, but prior art device techniques tend to cause excessive wear on the devices due to the momentum changes that are required.
  • the art would benefit from an apparatus which is capable of receiving a continuous web at one velocity and cutting a section from the web at a first pitch to create a pad, which is transferred, oriented and properly spaced to a desired receiving pitch for placement on a receiving surface, while at the same time reducing wear on the devices.
  • US 4,578,133 discloses a method and apparatus for applying discrete strips of a first material in a predetermined pattern to a web of a second material.
  • the present invention provides an apparatus for processing a continuous web into discrete pieces according to claim 1
  • an apparatus and a method for receiving a continuous web separating a section from the web thereby forming a pad, spinning the pad to a predetermined angle, and changing the spacing between neighboring pads while transferring the pad to a receiving surface.
  • the apparatus generally includes a transfer mechanism and a cutter.
  • the transfer mechanism comprises a plurality of pucks rotatably driven about a transfer axis.
  • the cutter comprises an anvil roller and a plurality of knife blades rotatably driven about a knife blade axis.
  • the transfer axis and knife blade axis are offset, so as to allow modification of the circumferential spacing between neighboring pucks.
  • the pucks are each supported by a puck support.
  • Each puck is coupled to a spin cam and a pitch cam. As the puck rotates about the transfer axis, the cams alter the position of the puck.
  • the spin cam alters puck motion about a puck spin axis which is generally perpendicular to the transfer axis.
  • the pitch cam alters the relative circumferential spacing of adjacent pucks.
  • a single transfer placement method the following steps:
  • transporting step may incorporate the following steps:
  • An apparatus for processing a continuous web into discrete pieces comprising a base frame, a continuous infeeding web of material traveling at a first velocity, a plurality of pucks receiving said infeeding web, said pucks adapted to travel at a second velocity, faster than said first velocity, through a circumferential transfer path about said transfer axis from at least a web receiving location to a pad placement location, said base frame carrying said plurality of pucks, a cutter component for creating discrete pads from said infeeding web of material, a vacuum source adapted to supply a vacuum through a web receiving surface of said pucks along at least a portion of said transfer path, a receiving web of material for receiving said pads at said pad placement location.
  • the base frame can be a movable structure for repositioning said pad placement location in a cross-machine direction.
  • Figure 1 illustrates a front elevation view of a first embodiment 1 of an apparatus according to the present invention.
  • the apparatus 1 preferably includes a transfer mechanism 3 and a cutter 5.
  • the transfer mechanism 3 includes a plurality of pucks 301.
  • Each puck 301 has a leading edge 302 and a trailing edge 304 and is coupled to a puck support 303, which is ultimately rotated by a puck wheel 305 about a puck transfer axis 306, which is a major axis of rotation, through a transfer path 4.
  • "rotate” and its variants refer to the movement of an entire puck 301 and puck support 303 assembly about the transfer axis 306, while “spin” and its variants refer to the radial spin of a puck 301 about a puck spin axis 312, which is substantially perpendicular to the puck transfer axis 306.
  • the puck wheel 305 is driven preferably by a substantially operationally constant rotational force provided by a shaft 314 coupled to a motor 307.
  • the puck support 303 is coupled to the puck wheel 305 by a primary pitch linkage 310 and a secondary pitch linkage 311.
  • the primary pitch linkage 310 preferably includes three attachment points; a puck wheel anchor 313, a pitch cam follower anchor 315, and a secondary linkage anchor 317.
  • the puck wheel anchor 313 couples the primary pitch linkage 310 to a predetermined location on the puck wheel 305.
  • the puck wheel anchor 313 serves as a minor rotation axis about which the primary pitch linkage 310 rotates, thereby causing, in cooperation with the secondary pitch linkage 311, the associated puck 301 to change its position in relation to the major axis of rotation, the puck transfer axis 306.
  • the pitch cam follower anchor 315 couples the primary pitch linkage 310 to a pitch cam follower 329.
  • the secondary linkage anchor 317 couples the primary pitch linkage 310 to the secondary pitch linkage 311.
  • the secondary pitch linkage 311 preferably provides a substantially linear link coupled near one end to the primary pitch linkage 310 and near the other end to the puck support 303.
  • the apparatus 1 also includes a cam plate 320 situated about the transfer axis 306.
  • the cam plate 320 is preferably a stationary plate having at least two raceways therein or thereon, a spin cam race 321 and a pitch cam race 323.
  • the spin cam race 321 is preferably provided around the outside edge of the cam plate 320.
  • a spin cam follower 325 which is preferably a roller bearing, is in sliding or rolling communication with the spin cam race 321.
  • a spin linkage 327 couples the puck 301 to the spin cam follower 325. While the spin cam race 321 is depicted as providing a ninety degree puck rotation, positioning of the spin cam race 321 is generally determined by the desired spin angle of the puck 301.
  • the cam plate 320 assists the pitch change, or altered circumferential puck spacing.
  • the pitch change is accomplished by using the pitch cam follower 329, which is preferably a roller bearing, in sliding or rolling communication with the pitch cam race 323.
  • Located preferably near a radial distal edge 308 of the puck wheel 305 is a pair of pitch rails 309, which allow controlled circumferential displacement of the pucks 301.
  • the pitch rails 309 are preferably fastened to the puck wheel 305.
  • the puck support 303 is provided with rail guides 318, which are slidably disposed on the pair of pitch rails 309.
  • the pitch cam race 323 is formed, preferably on a face of the cam plate 320, to effect a desired pitch change.
  • the pitch cam race 323 is situated further from the puck transfer axis 306, the velocity of the puck 301 will be higher than where the pitch cam race 323 is positioned nearer the transfer axis 306.
  • the maximum pitch change therefore, is generally determined by the shape of the pitch cam race 323 and the combined length from the primary pitch linkage 310 of the puck wheel anchor 313 to the secondary pitch linkage 311 end which is coupled to the puck support 303.
  • the cutter 5 is best described with reference to Figures 1 and 3 .
  • the cutter 5 preferably comprises an anvil roller 501 having an anvil surface 503, and a knife wheel 505.
  • the knife wheel 505 includes a plurality of knife blades 507 radially disposed about a knife wheel axis 506.
  • the knife wheel 505 preferably has fewer blades 507 than the number of rotator pucks 301 provided on the transfer mechanism 3.
  • the fewer number of blades 507 provided allows a greater offset 508 between the knife wheel axis 506 and the puck transfer axis 306.
  • the eccentric offset 508 causes a virtual withdrawal of the knife blades 507 to allow more space to achieve desired pitch change.
  • an anvil wheel having a plurality of anvils could be substituted for the knife wheel 505 and a knife roller having a knife blade could be substituted for the anvil roller 501.
  • the apparatus 1 may also include a manifold 330 to allow fluid communication between a vacuum supply (not shown) and the pucks 301 at certain positions.
  • the manifold 330 is preferably comprised of a vacuum port 322, a stationary vacuum manifold 324 and a rotating vacuum manifold 326.
  • the vacuum port 322 preferably provides vacuum connection point, which may be standard or custom.
  • the port 322 provides a support structure and an aperture 332 to allow vacuum pressure to be drawn through the port 322.
  • the stationary vacuum manifold 324 is generally a fixed plate having at least one vacuum groove 334 formed therethrough at a predetermined location. The vacuum groove 334 is stationary and in fluid communication with the vacuum port aperture 332.
  • the rotating vacuum manifold 326 is generally a rotating plate preferably having a face in slidable relation to the puck supports 303.
  • the rotating manifold 326 includes at least one aperture 336 to allow, when in fluid communication with the aperture 334 in the stationary manifold 324, a vacuum to be drawn through the vacuum port 322, the stationary manifold 324, the rotating manifold 326, the puck support 303 and the puck 301.
  • FIG 4B provides an alternate stationary vacuum manifold 333.
  • This embodiment 333 preferably includes a vacuum port 322 coupled to a vacuum source (not shown) and interfaces to a rotating vacuum manifold, such as the rotating vacuum manifold 326 in Figure 4A or Figure 19 .
  • the vacuum port 322 preferably provides vacuum connection point, which may be standard or custom.
  • the port 322 provides a support structure and an aperture 332 to allow vacuum pressure to be drawn through the port 322.
  • the stationary vacuum manifold 333 is generally a fixed plate having at least one, but preferably two vacuum grooves 334 formed at predetermined locations. The vacuum grooves 334 are in fluid communication with the vacuum port aperture 332.
  • the manifold 333 also preferably includes an ejection port 335 including an ejection aperture 337, which may be adapted to be coupled to a compressed air source (not shown).
  • the ejection port 335 is preferably in fluid communication with an ejection groove 339, which may be an extension of one of the vacuum grooves 334, but separated therefrom by a vacuum plug 341.
  • the vacuum plug 341 may be selectively placeable but is preferably stationarily held in one of said vacuum grooves 334. In this way, vacuum may be drawn through the vacuum grooves 334 and compressed air may be forced through the ejection port 335 and into the ejection groove 339.
  • a pair of manifold apertures 336 may each encounter a vacuum groove 334, perhaps substantially simultaneously. However, it may be desirable to remove vacuum from one of the apertures 336 and then force air through that same aperture 336 in opposite direction to the vacuum to aid in the transfer of a pad 11 to a receiving surface 25. For instance, it may be desirable to maintain vacuum on the trailing edge of a puck 301 while forcing a pad 11 off of the puck 301 leading edge with compressed air provided through the ejection aperture 337 and ejection groove 339.
  • the terms “circumferential” and “rotation” are used to describe the transfer movement of the pucks 301, it is to be understood that the invention is not limited to applications utilizing a circular motion.
  • the pucks 301 may be coupled to a chain drive (not shown) or something similar.
  • the travel path of the pucks 301 may then be defined by the shape of an employed cam plate 320 or by the path of any supporting pitch rails 309 used.
  • All of the components of the apparatus 1 are either generally well known in the art, such as the roller bearings preferred for the cam followers, or can readily be made of standard materials.
  • the knife blades 507 and anvil roll 501 may be made of well known materials such as common tool steels.
  • the supporting and rotating structures, such as the puck supports 303, linkages, wheels, etc., may be made of suitable aluminum.
  • the pucks 301 are formed from any desirable material, but a lightweight material is preferred, such as nylon.
  • the apparatus 1 receives a continuous web 10, separates a section from the continuous web 10 to form an insert or pad 11, spins the pad 11 to a predetermined angle, and changes the pitch between consecutive pads 11. While the operation of the apparatus 1 is described with reference to a single puck 301a and a single knife blade 507a, it is to be understood that the operation of the remaining pucks 301 and knife blades 507 is at least substantially similar. Furthermore, although the operation is described with reference, in Figures 8-15 , to discrete puck positions P1-P8, it is to be understood that the operation is preferably generally continuous. The discrete positions aid in illustrating the operations being performed.
  • Figures 5 and 6 depict a puck velocity profile, as each puck 301 rotates through various portions of its travel path.
  • the puck transfer mechanism 3 rotates about the puck transfer axis 306 at a relatively constant velocity VS.
  • the puck 301 may be moving at a substantially constant first velocity V1.
  • a pad 11 is then cut from the continuous web 10. To create the pad 11, a first cut 402 is made proximate the leading puck edge 302 and a second cut 404 is made proximate the trailing puck edge 304.
  • the puck 301 may be accelerated 406 to prevent any collision with the subsequent neighboring puck 301 and may be decelerated 408 thereafter back to a substantially constant velocity 410, which may be the first velocity V1.
  • a substantially constant velocity 410 which may be the first velocity V1.
  • the puck 301 spins to a desired angle and the velocity of the puck 301 may change 412 to achieve a desirable predetermined circumferential spacing.
  • the pad 11 is placed 416 on the receiving surface 25.
  • the puck 301 is decelerated 418 to a substantially constant 420 first velocity V1 and is spun back to a web-receiving orientation. The process then begins anew.
  • a first reference point 430 represents a point on the shaft (314 on Figures 2 and 3 ) spinning about the puck transfer axis 306 at the relatively constant velocity VS during operation of the device 1.
  • a second reference point 432 represents a position of a puck 301. While the shaft reference 430 may be rotating about the puck transfer axis 306 at a constant velocity, the position of the puck reference 432 with respect to the shaft 314 may change a desirable amount, such as an increase of ten degrees or more of rotation during acceleration and a decrease of ten degrees or more of rotation during deceleration.
  • the shaft reference 430 is generally radially aligned with the puck reference 432 during times of cutting 402,404.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a first distance 434.
  • the references 430,432 are again aligned.
  • the puck 301 is again accelerated, and at the end 414 of the second acceleration the puck reference 432 has advanced beyond the shaft reference 430 by a second distance 436.
  • the first distance 434 may be the same as, or different than, the second distance 436.
  • both references 430,432 are aligned and ready for another revolution.
  • Figure 8 shows a representative puck 301a in a first position P1.
  • the puck 301a receives continuous web material 10 traveling in a first direction 21 at the first velocity.
  • a vacuum is drawn through the vacuum port 326, the stationary vacuum manifold 322, the rotating vacuum manifold 324, the puck support 303 and the puck 301a to support the material 10 on the puck 301a surface.
  • the puck 301a is traveling about a puck wheel axis 306 in a second direction 23, to which at this point P1 the first direction 21 is preferably substantially tangential.
  • the puck 301a continues to move in the second direction 23 into a second position P2.
  • Figure 9 depicts the puck 301a in the second position P2.
  • the puck 301a is at the leading edge cut time 402 of Figure 6 .
  • the cutter anvil surface 503 cooperates with a representative knife blade 507a to cut the web 10 proximate the leading edge 302a of the puck 301a.
  • the puck 301a proceeds to travel in the second direction 23 past the anvil roller 501 to a third position P3.
  • Figure 10 shows the puck 301a in the third position P3.
  • the puck 301a is at the trailing edge cut time 404 of Figure 6 .
  • the cutter anvil surface 503 cooperates with a knife blade 507 to cut the web 10 proximate the trailing edge 304a of the puck 301a to cut a section 11a from the web 10.
  • the section 11a is held to the puck 301a by the vacuum, which was drawn previously.
  • the puck 301a proceeds to travel in the second direction 23 to a fourth position P4.
  • Figure 11 shows the puck 301a in the fourth position P4. As mentioned previously, it is often desirable to spin the on cut section 11a to some predetermined angle prior to placement on a receiving surface 25. Here, the puck 301a is shown while in the midst of a spin. While Figure 11 shows the puck 301a rotating in the fourth position P4, the puck 301a may rotate in a third direction 17 to a desired angle anytime after the trailing edge cut made at the third position P3 and before placement onto the receiving surface 25.
  • the apparatus 1 may also change the circumferential spacing of the pucks 301a; thereby resulting in a placement pitch that is different from the pitch at which the web material 10 was cut.
  • the eccentric nature of the puck wheel axis and the knife wheel axis 506 allows the puck 301a to drop away from the knife wheel 505, thereby providing greater angular movement ability than if a knife blade 507 remained between consecutive pucks 301.
  • the ultimate circumferential spacing of the pucks 301 at the receiving surface 25 is a function of a desired placement pitch 27 and the speed at which the receiving surface 25 is traveling. In the preferred embodiment, the circumferential spacing is achieved by a desired pitch cam slot 323 configuration. Upon achieving desired circumferential spacing, the puck 301a arrives in a fifth position P5.
  • the puck 301a is shown in the fifth position P5 in Figure 12 .
  • the puck 301a is at the middle of the placement time 416 shown in Figure 6 .
  • the puck 301a has been situated at the correct placement pitch or distance 27 with respect to the puck 301 that preceded it 301a.
  • the section 11a is transferred to the receiving surface 25.
  • the vacuum that was drawn through the puck support 303 and puck 301a may be removed from at least a portion of the puck 3031a, thereby allowing a smooth transfer of the cut insert 11a from the puck 301a to the receiving surface 25.
  • the vacuum may remain active through the stationary vacuum manifold 322 and the rotating vacuum manifold 324 to assist in supporting subsequent sections 11 in place on later neighboring pucks 301.
  • the puck 301a continues in the second direction 23 to a sixth position P6.
  • Figure 13 shows the puck 301a in the sixth position P6.
  • the puck 301a is shown as having released the cut section 11a onto the receiving surface 25.
  • the puck 301a continues to move in the second direction 23 to a seventh position.
  • Figure 14 depicts the seventh position P7 of the puck 301a. If the puck 301a and pad 11a were rotated after cutting to some predetermined angle prior to placement on the receiving surface 25, the puck 301a may need to be adjusted to a web-receiving orientation. While Figure 14 shows the puck 301a spinning in the seventh position P7, the puck 301a may spin in a fourth direction 19 anytime after the section 11a has been placed on the receiving surface 25 and before the continuous web 10 is received.
  • the fourth direction 19 may be the same as the third direction 17 or different.
  • the puck 301a is shown in the eighth position P8 in Figure 15 .
  • the eighth position P8 is substantially similar to the first position P1, except that the knife blade 507a has now advanced a number of positions ahead of the puck 301a.
  • the number of positions advanced is a function of the difference between the number of pucks 301 and the number of knife blades 507. In this operating example, there are nine pucks 301 and eight knife blades 507. Therefore, in the eighth position P8, the knife blade 507a has advanced one position ahead of its position in the first position P1.
  • FIG 16 depicts an alternative embodiment 200 of a cam plate 320 according to the present invention.
  • the cam plate 200 preferably includes a spin cam race 321 and at least one pitch cam race 202, such as that formed by a first edge 202a and a second edge 202b, which are preferably concentric.
  • This cam plate embodiment 200 more preferably includes a second cam race 204, which may be nested within the first 202 and formed by a third edge 204a and a fourth edge 204b, which are preferably concentric.
  • a single replacement cam plate 200 may be used on different systems utilizing different static cam race profiles, thus reducing the number of spare parts that must be warehoused.
  • a single cam plate 200 may provide added flexibility to a single machine if used in conjunction with pitch cam follower cartridges 600.
  • Figure 17A and Figure 17B show the use of the preferred cam plate 200 installed in a system according to the present invention and used in conjunction with pitch cam follower cartridges 600.
  • Figure 17A shows pitch cam follower cartridges 600 having a first pitch cam follower 629 sized and adapted to follow the first pitch cam race 202 in the cam plate 200.
  • Figure 17B shows pitch cam follower cartridges 600 having a second pitch cam follower 631 sized and adapted to follow the second pitch cam race 204 in the cam plate 200.
  • FIG 18A is a perspective view of a preferred pitch cam follower cartridge 600.
  • the preferred pitch cam follower cartridge 600 has a cartridge housing 602 having a first side 604 and a second side 606, each side having at least one but preferably a plurality of mounting flanges 608.
  • the mounting flanges 608 on the first side 604 of a first cartridge 600 may be interlaceable with the mounting flanges 608 provided on the second side 606 of a second cartridge 600.
  • Pivotally mounted to the cartridge housing 602 by a puck wheel anchor 313 is a primary pitch cam linkage 310.
  • the pitch cam linkage 310 supports a pitch cam follower 329, such as the pitch cam follower 629 shown in Figure 17A , and provides a site for a secondary linkage anchor 317.
  • Figure 18B is a perspective partial assembly view of a preferred pitch cam follower cartridge 600 being installed on a preferred puck wheel 305.
  • a plurality of fasteners 620 is provided to mechanically couple the pitch cam follower cartridges 600 to the puck wheel 305.
  • the fasteners 620 may be threaded fasteners adapted to extend through the mounting flanges 608 on the cartridge housing 602 and cooperate with threaded apertures 622 on the puck wheel 305 to support the cartridge 600 on the wheel 305.
  • FIG 19 is a perspective view of a preferred method of rotating a vacuum manifold 326.
  • a drive pulley 650 is driven by a vacuum manifold drive shaft 652 and an endless belt 654 is placed about the drive pulley 650 and the vacuum manifold 326.
  • An idler pulley 656 may be used to maintain desired tension of the belt 654.
  • the rotating vacuum manifold 326 may be placed at variable positions relative to the main puck wheel 305.
  • Such independent drive may be advantageous for certain applications, such as offering size change flexibility.
  • FIG 20 is a perspective view of a preferred puck support 303 according to the present invention.
  • the puck support 303 comprises a puck support head 700 having a puck support surface 702. Extending through the puck support surface 702 is at least one, but preferably a plurality of vacuum apertures 704a-h.
  • the puck support head 700 also preferably includes a bearing aperture 710 that extends through the head 700 at least substantially perpendicular to the puck support surface 702.
  • the puck support 303 is provided with rail interface arms 712, which preferably receive the rail guides 318 to interface with the pitch rails 309.
  • the vacuum apertures 704a-h are in fluid communication with a vacuum chamber 338 that runs from the puck support head 700 through a puck support base 706 by way of vacuum pipes 708a,708b.
  • the puck support 303 may have a single vacuum chamber 338, the puck support 303 is preferably provided with two vacuum chambers 338a,338b.
  • multiple apertures 704a-d may communicate with a first vacuum chamber 338a, which may be termed the leading vacuum chamber 338a.
  • multiple apertures 704e-h may communicate with a second vacuum chamber 338b, which may be termed the trailing vacuum chamber 338b.
  • the cooperation of the puck support base 706 with the rotating vacuum manifold 326 and the stationary vacuum manifold 324 may desirably draw a vacuum through the leading vacuum chamber 338a before the vacuum is drawn through the trailing vacuum chamber 338b for receiving the continuous web 10.
  • the vacuum may be drawn for a longer period on the trailing vacuum chamber 338b after the vacuum has been removed from the leading vacuum chamber 338a when placing the cut pad 11 on the receiving surface 25.
  • Figure 21 provides a first embodiment 800 of a preferred puck 301 according to the present invention.
  • the puck 800 has a puck body 802 having a first web surface 804, a support surface 806 preferably oppositely disposed from the web surface 804, and a bearing shaft 808 depending from the support surface 806.
  • the bearing shaft 808 is adapted to be rotatably supported by the puck support 303, such as being rotatably held in the bearing aperture 710 in the puck support head 700.
  • the puck body 802 includes a vacuum chamber (not shown) within the body 802. Communicating fluidly with the vacuum chamber are preferably a plurality of web vacuum holes 810 extending through the web surface 804 and a plurality of support vacuum holes (not shown) extending through the support surface 806.
  • the web vacuum holes 810 are provided about the web surface 804, and may be evenly spaced and provided near the perimeter of the web surface 804.
  • the support vacuum holes provide a means for drawing a vacuum through the web vacuum holes 810 and the vacuum chamber in the puck body 802.
  • the support vacuum holes are mateable and adapted to cooperate with the vacuum apertures 704 extending into the puck support 303.
  • the puck 301 may be spun from a web-receiving orientation 801 to a web-placement orientation 803.
  • Such force may be applied to the bearing shaft 808 by way of the spin linkage 327 that is coupled to the spin cam follower 325, which is disposed at least partially in the spin cam race 321.
  • the depicted angle 805 is ninety degrees from the web-receiving orientation 801.
  • Figs. 21a-c because it is preferable to provide flexibility in the spatial size and/or shape of insert or pad 11, for instance in different sized or shaped product configurations, it is likewise preferable to provide adaptability in zones of vacuum application to web vacuum holes 810, for instance in by providing vacuum adaption to control a shorter insert 11.
  • That adaptability can take several forms. For instance, referring now to Figure 21a , a side cross sectional view of a series of countersunk vacuum commutation ports 810 is shown. A countersunk portion 810 is provided with the smaller vacuum commutation channel 810b.
  • the degree of countersinking can vary across the surface of the puck surface 802 depending on the level of vacuum and the surface area intended to receive vacuum more often or less often. For instance, small diameter vacuum ports such as a countersunk hole constricts vacuum rather than degrading vacuum over the entire shoe, so larger areas of the surface can remain unoccupied by the presence of an insert 11, yet sufficient vacuum would remain across the surface of the puck to retain control of the inserts 11.
  • FIG. 21b a perspective view of a size changed preferred puck 800 according to the present invention is shown.
  • a first, larger puck 800 is shown (in solid), and if a smaller insert 11 is desired for handling, a second, smaller puck 805 can be shown (in dashed line) which would apply vacuum to a smaller area, intended for a smaller insert 11.
  • FIG. 21c a blown up view of a series of different vacuum inserts 800, 800' and 800" are shown, which can be unbolted and re-shifted to create a different vacuum pattern on the pucks 800 of the present invention.
  • Main puck 800, and removable inserts 800' and 800" are shown, in order to provide different vacuum patterns to the surface of the puck 800 as desired.
  • the smaller inserts could contain an overlapping portion to overlap vacuum ports 810 of the adjacent and adjoining inserts or the puck 800 itself, in order to minimize the area receiving vacuum.
  • FIG 22A, Figure 22B and Figure 23 provide a second embodiment 850 of a preferred puck 301 according to the present invention.
  • the puck 850 has a puck body 852 having a first web surface 854, a support surface 856 preferably oppositely disposed from the web surface 854, and a bearing shaft 858 depending from the support surface 856.
  • the bearing shaft 858 is adapted to be rotatably supported by the puck support 303, such as being rotatably held in the bearing aperture 710 in the puck support head 700.
  • the puck body 852 includes a vacuum chamber (not shown) within the body 852.
  • Communicating fluidly with the vacuum chamber are preferably a plurality of web vacuum holes 860 extending through the web surface 854 and a plurality of support vacuum holes 862 extending through the support surface 856.
  • the web vacuum holes 860 are provided about the first web surface 854, and may be evenly spaced and provided near at least a portion of the perimeter of the web surface 852.
  • the support vacuum holes 862 provide a means for drawing a vacuum through the web vacuum holes 860 and the vacuum chamber in the puck body 852.
  • the support vacuum holes 862 are mateable and adapted to cooperate with the vacuum apertures 704 extending into the puck support 303.
  • the puck 301 may be spun from a web-receiving orientation 851 to a web-placement orientation 853.
  • Such force may be applied to the bearing shaft 858 by way of the spin linkage 327 that is coupled to the spin cam follower 325, which is disposed at least partially in the spin cam race 321.
  • the depicted angle 855 is ninety degrees from the web receiving position 801.
  • this embodiment 850 preferably includes a pair of end web surfaces 864, which may be slidably disposed upon a pair of rails 866.
  • a dish cam 868 may be provided between a desired puck support 303 and the puck 301.
  • the dish cam 868 preferably includes at least one cam groove 870 having a changing radius.
  • an end web cam follower 872 that is placed in the cam groove 870 causes the end web surface 864 to slide along the rails 866 to a second position, preferably further from the puck body 852.
  • the end web surfaces 864 are also preferably provided with a plurality of web vacuum holes 860 in fluid communication with an end web vacuum chamber 874.
  • the end web vacuum chamber 274 is preferably in fluid communication with the vacuum chamber (not shown) in the puck body 852. Such fluid communication between the end web vacuum chamber 274 and puck body 852 vacuum chamber may be provided by one or more vacuum bellows 876.
  • Figure 24 and Figure 25 depict a second embodiment 2 of an apparatus according to the present invention.
  • the pitch cam arrangement of the first embodiment has been replaced by a plurality of servo drives 880, each of which may control the relative circumferential movement of a puck 301 relative to the main puck wheel 305, to which the servo drives 880 are preferably mounted.
  • the servo drives 880 preferably have a rotatable shaft 882 that may be coupled to the primary pitch linkage 310 to enable such control.
  • the servo drives 880 preferably have a first electrical terminal 884 and a second electrical terminal 886, wherein the first electrical terminal 884 of a first servo drive 880 is electrically coupled to the second electrical terminal 886 of a second servo drive 880 and the second electrical terminal 886 of the first servo drive 880 is electrically coupled to the first electrical terminal of a third servo drive 880.
  • the electrical connections may be provided by a plurality of electrical wires 888 in a daisy chain format.
  • the servo drives 880 are preferably controlled by and communicatively coupled to a servo drive controller (not shown). Such communicative coupling may be provided by a slip ring 890 and a plurality of electrical wires (not shown).
  • An example of servo drives 880 and a servo drive controller may be found in the Rexroth IndraDrive® Mi Drive System provided by Bosch Rexroth Corporation of Hoffman Estates, Illinois.
  • Figure 26, Figure 27 and Figure 28 provide a second preferred velocity profile and associated puck positioning of an apparatus according to the present invention.
  • This profile may be referred to as an accel-to-place profile.
  • the puck transfer mechanism 3 rotates about the puck transfer axis 306 at a relatively constant system velocity VS.
  • a first velocity which may be the system velocity VS.
  • a pad 11 is then cut from the continuous web 10. To create the pad 11, a first cut 902 is made proximate the leading puck edge 302 and a second cut 904 is made proximate the trailing puck edge 304.
  • the puck 301 may be accelerated 906 to prevent any collision with the subsequent neighboring puck 301 and may be decelerated 908 thereafter.
  • the puck 301 spins to a desired angle and the velocity of the puck 301 may change 910 to achieve a desirable predetermined spacing.
  • the pad 11 is placed 912 on the receiving surface 25.
  • the puck 301 may be decelerated and then accelerated 914 in preparation for the next rotation. The process then begins anew.
  • a first reference point 430 represents a point on the shaft (314 on Figures 2 and 3 ) spinning about the puck transfer axis 306 at the relatively constant velocity VS during operation of the device 1.
  • a second reference point 432 represents a position of a puck 301. While the shaft reference 430 may be rotating about the puck transfer axis 306 at a relatively constant velocity, the position of the puck reference 432 with respect to the shaft 314 may change a desirable amount, such as an increase of ten degrees or more of rotation during acceleration and a decrease of ten degrees or more of rotation during deceleration.
  • the shaft reference 430 is generally radially aligned with the puck reference 432 during times of cutting 902,904.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a first distance 924.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a second distance 926.
  • the puck 301 Prior to pad placement 912, the puck 301 is again accelerated, and at the end of the second acceleration the puck reference 432 has advanced beyond the shaft reference 430 by a third distance 928.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a fourth distance 929.
  • the first distance 924, second distance 926, third distance 928 and fourth distance 929 may be the same or different.
  • Figure 29, Figure 30 and Figure 31 provide a third preferred velocity profile and associated puck positioning of an apparatus according to the present invention.
  • This profile may be referred to as a decel-to-place profile.
  • the puck transfer mechanism 3 rotates about the puck transfer axis 306 at a relatively constant system velocity VS.
  • a first velocity which may be the system velocity VS.
  • a pad 11 is then cut from the continuous web 10. To create the pad 11, a first cut 932 is made proximate the leading puck edge 302 and a second cut 934 is made proximate the trailing puck edge 304.
  • the puck 301 may be accelerated 936 to prevent any collision with the subsequent neighboring puck 301 and may be decelerated 408 thereafter.
  • the puck 301 spins to a desired angle and the velocity of the puck 301 may change 944 to achieve a desirable predetermined spacing.
  • the pad 11 is placed 946 on the receiving surface 25.
  • the puck 301 may be accelerated 948 and then decelerated 950 in preparation for the next rotation. The process then begins anew.
  • a first reference point 430 represents a point on the shaft (314 on Figures 2 and 3 ) spinning about the puck transfer axis 306 at the relatively constant velocity VS during operation of the device 1.
  • a second reference point 432 represents a position of a puck 301. While the shaft reference 430 may be rotating about the puck transfer axis 306 at a relatively constant velocity, the position of the puck reference 432 with respect to the shaft 314 may change a desirable amount, such as an increase of ten degrees or more of rotation during acceleration and a decrease of ten degrees or more of rotation during deceleration.
  • the shaft reference 430 is generally radially aligned with the puck reference 432 during times of cutting 932,934.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a first distance 964.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a second distance 436.
  • the puck 301 may be decelerated, and at the end of the second acceleration the puck reference 432 has advanced beyond the shaft reference 430 by a third distance 438.
  • the puck reference 432 has changed position relative to the shaft reference 430 by a fourth distance 436.
  • the first distance 434, second distance 436, third distance 438 and fourth distance 439 may be the same or different.
  • the unit can be used to vary insert 11 length between an maximum, to as short as desired. Because, as explained later, shorter inserts 11 would be carried by pucks 301 off-center, the unit would need to be shifted in the cross-machine direction to alter placement and depositions of the insert 11 onto carrying webs.
  • Drive side jacks/wheels for lifting the unit 1 and a sliding apparatus allow for a cross-machine direction shift to alter placement of the inserts 11.
  • FIG. 32 a front elevation view of an alternate embodiment of the machine of Figure 1 in a first position, in which the incoming web 10 is allowed to slip for a period on a receiving puck 301 prior to be formed into a discrete piece 11.
  • the apparatus 1 receives a continuous web 10, the continuous web fed to the apparatus at a velocity V1.
  • the pucks 301 are rotating at a second velocity V2, which is faster than V1.
  • the velocity difference between the web 10 and the carrying puck 301a results in a slip 000 as shown in Fig. 33 , the slip continuing until the next insert 11 is severed.
  • the unit spins the pad 11 to a predetermined angle, and changes the pitch between consecutive pads 11. If no slip is desired, V1 matches V2, and the length of the pads or inserts 11 will be maximized. If a shorter pad or insert 11 is desired, V1 will be less than V2. The greater the differential between V1 and V2, the shorter the pad or insert 11 produced. The velocity mismatch between V1 and V2 establish a cutoff length of the insert 11 that varies according to desired length of the inserts 11.
  • the pucks 301 will be carrying inserts 11 off-center from front to back upon acquisition, as seen in Figure 33 .
  • the leading edge of the insert 11 is not at an edge of a puck 301, but the trailing edge of the insert 11 is at or near the trailing edge of the puck 301a.
  • the insert 11 Upon rotation and re-orientation of the puck, because inserts 11 are carried off-center in the instance of a short-cut insert 11, the insert 11 will be seen at the deposition as off-center in the cross-machine direction.
  • Figures 34 and 35 depict a side view of an alternative embodiment of a system of the present invention.
  • Figures 34 and 35 depict a slidable base system for adjusting the lay down position of discrete pieces 11 of an insert web 10.
  • the transfer mechanism 3 and the cutter mechanism 5 may be mounted to individually or simultaneously be adjusted or moved in a lateral direction as indicated, understood to indicate a direction that is substantially perpendicular to the travel of receiving surface 25 (see e.g, Fig. 24 ).
  • the transfer mechanism 3 and the cutter mechanism 5 are stationarily mounted to a movable frame structure 700 ( Fig. 35 ).
  • the frame structure 700 may include one or more mounting surfaces for supporting various portions of the mechanisms 3,5.
  • the frame structure 700 is preferably translatable in the lateral direction (left to right and back, on Figs. 34 and 35 ), supported on a translating means, such as one or more rails, one or more wheels, or even simply on a sliding friction surface.
  • the frame structure 700 may be moved, preferably with respect to a stationary frame structure 704, in the lateral direction by an actuating means 710.
  • actuating means 710 may be a hydraulic or pneumatic cylinder (not shown), an electric motor driven worm gear 714 in combination with a threaded actuating rod 712 that is threadably engaged with the stationary frame structure 704. In this way, control of the actuating means 710 results in movement of the moveable frame structure 702 with respect to the stationary frame structure 704.
  • the range of movement achievable in the lateral direction by the movable frame structure 702 is preferably greater than zero to about fifty percent (50%) of an insert cut pitch, X, more preferably between about ten to about thirty-five percent of the cut pitch, and most preferably about fifteen percent of the cut pitch, X.
  • the system can be designed to accommodate a maximum insert length, and a size change (see, e.g., Figs. 21a-c ), to provide different inserts for different product codes.
  • the system can then be shifted in the cross machine direction (e.g., laterally left and right in Figs. 34 and 35 ) to alter placement of inserts 11 onto receiving surface 25, which provides additional flexibility in the product design built on the machine.
  • centerline offset for insert 11 placement relative to the receiving surface 25 could be altered based on user preference in product design.
  • FIG. 36 is a top plan view of a ladder web construction for making pant type diapers.
  • the ladder web assembly 1000 generally includes a plurality of stringer or stile webs 1002 running at least substantially parallel to each other and spaced by a gap 1004 of a preferred distance.
  • the stringer webs 1002 may consist of a single web layer or may comprise a compound web assembly. Indeed, the stringer webs 1002 may include elastic members deposited in a desired pattern. Spanning the gap 1004, there is placed a plurality of rung or step web assemblies 1006.
  • the rung web assemblies 1006 are preferably discrete assemblies placed at a desire spacing or pitch 1008.
  • the rung web assemblies 1006 may consist of a single web layer or may comprise a compound web assembly, such as an insert 11 provided by a transfer mechanism 3. Indeed, the rung web assemblies 1006 may include elastic components deposited in a desired pattern so as to at least partially span the gap 1004. In prior systems, it was common to trim one of the stringer web assemblies 1002 to provide a final product having a purportedly improved fit. The unit can be repositioned as shown in Figures 34 and 35 to alter the laydown position of rung assemblies 1006 if desired.
  • Figure 37 depicts a plan view of a position of a slid discrete web portion 11 on a puck, demonstrating the translation and repositioning of an insert 11 at a deposition point on a web accomplished by sliding the unit as shown in Figures 34 and 35 . Because of the slip of the web portion 11 on the pucks 301 during acquisition, the inserts 11 are carried by the pucks 301 off-center from front to back upon acquisition. If left in its original position, puck 301 at puck position PP relative to the carrying web 25 would lay down the insert 11 at an off-center position relative to the centerline CL of the web 25, as shown in phantom, on the left side of Fig. 37 .
  • the puck position is shifted according to Figures 34 and 35 to puck position PP', at which the insert 11 position is centered in the cross-machine direction across the centerline CL of the web 25.
  • the insert 11 can then be deposited on web 25 as previously described.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Claims (2)

  1. Vorrichtung zum Verarbeiten einer Endlosbahn in einzelne Teile, wobei die Vorrichtung Folgendes umfasst:
    einen Grundrahmen (700, 704);
    eine zulaufende Endlosbahn aus Material (10);
    mehrere Pucks (301), die die zulaufende Bahn durch einen umlaufenden Übertragungsweg von wenigstens einem Bahn aufnehmenden Standort zu einem Padplatzierungsstandort aufnehmen, wobei der Grundrahmen die mehreren Pucks trägt;
    eine Schneidekomponente (5, 503, 507) zum Erzeugen einzelner Pads aus der zulaufenden Bahn aus Material;
    eine Unterdruckquelle, die angepasst ist, einen Unterdruck durch eine Bahn aufnehmende Oberfläche (804) der Pucks entlang wenigstens eines Abschnitts des Übertragungswegs bereitzustellen;
    eine Aufnahmebahn aus Material (25) zum Aufnehmen der Pads an dem Padplatzierungsstandort,
    wobei der Grundrahmen eine bewegliche Anordnung (700) zum Neupositionieren des Padplatzierungsstandorts in einer Querrichtung umfasst.
  2. Vorrichtung nach Anspruch 1, wobei die Pucks (301) angepasst sind, sich mit einer Geschwindigkeit zu bewegen, die höher ist als eine Geschwindigkeit der zulaufenden Endlosbahn aus Material (10).
EP13166330.4A 2012-05-02 2013-05-02 Vorrichtung für die Positionierung eines Einsatzes mit Einzelübertragung mit Querrichtungseinsatz-Positionierungssteuerung Active EP2659869B1 (de)

Priority Applications (1)

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PL13166330T PL2659869T3 (pl) 2012-05-02 2013-05-02 Urządzenie do umieszczania wkładek w pojedynczym przemieszczeniu ze sterowaniem poprzecznego umieszczania wkładek

Applications Claiming Priority (1)

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US201261641694P 2012-05-02 2012-05-02

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CA (1) CA2814914C (de)
DK (1) DK2659869T3 (de)
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Publication number Priority date Publication date Assignee Title
US9283683B2 (en) * 2013-07-24 2016-03-15 Curt G. Joa, Inc. Ventilated vacuum commutation structures
ITTO20130919A1 (it) * 2013-11-13 2014-02-12 Fameccanica Data Spa Dispositivo per la produzione di una pluralita' di articoli convogliati in un flusso a passo costante
US9289329B1 (en) 2013-12-05 2016-03-22 Curt G. Joa, Inc. Method for producing pant type diapers
CN104401687A (zh) * 2014-11-05 2015-03-11 江苏金卫机械设备有限公司 一种训练裤芯体变速转位机构
MX2017008852A (es) 2015-01-26 2017-10-24 Joa Curt G Inc Girador y colocador de productos.
EP3325387B1 (de) 2015-07-24 2022-02-23 Curt G. Joa, Inc. Vakuumkommutierungsvorrichtung und -verfahren
IT201600087583A1 (it) * 2016-08-26 2018-02-26 Gdm Spa Apparecchiatura per il trasferimento e la rotazione di un oggetto
US11737930B2 (en) 2020-02-27 2023-08-29 Curt G. Joa, Inc. Configurable single transfer insert placement method and apparatus
CA3236741A1 (en) * 2021-12-08 2023-06-15 Curt G. Joa, Inc. Transfer puck with compressible surface member

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US4578133A (en) * 1984-11-19 1986-03-25 Kimberly-Clark Corporation Method and apparatus for applying discrete strips to a web of material
US4726876A (en) 1985-10-18 1988-02-23 Kimberly-Clark Corporation Apparatus for repositioning discrete articles
SE462333B (sv) 1987-01-23 1990-06-11 Moelnlycke Ab Anordning foer att oeverfoera artiklar fraan en foersta till en andra transportbana
US5025910A (en) 1990-02-02 1991-06-25 Curt G. Joa, Inc. Rotary pad turner
US5045135A (en) * 1990-11-15 1991-09-03 Paper Converting Machine Company Apparatus and method for cutoff register control for diaper machines
US6620276B1 (en) * 1998-07-22 2003-09-16 The Procter & Gamble Company Apparatus for transporting a continuous web, and for manipulating the web
JP4012042B2 (ja) * 2002-11-01 2007-11-21 株式会社瑞光 着用物品の製造装置
EP1961403B1 (de) * 2007-02-21 2022-06-15 Curt G. Joa, Inc. Verfahren und Vorrichtung zur Positionierung einer Einlage mit Einzelübertragung

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Publication number Publication date
EP2659869A1 (de) 2013-11-06
CA2814914C (en) 2020-11-10
CA2814914A1 (en) 2013-11-02
DK2659869T3 (da) 2017-11-06
PL2659869T3 (pl) 2018-01-31
ES2641328T3 (es) 2017-11-08

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